Track vulnerabilities like this one. Sign up free to get alerted when software you use is affected.
9.3

Capacitor Android/iOS apps can load attacker content as own page

CVE-2026-103922 · published 8 days ago
Summary

Versions of Capacitor for Android and iOS up to 6.2.2, 7.6.9, 8.3.5, 8.4.3 and 8.5.1 let a malicious link load external data through an internal proxy and present it as if it came from the app itself. This lets attackers read the app’s stored data, cookies, and use its native features. Update to the fixed versions of Capacitor or apply the vendor’s recommended patch.

What to do
  • Update capacitor android to version 6.2.2.
  • Update capacitor android to version 7.6.9.
  • Update capacitor ios to version 6.2.2.
  • Update capacitor ios to version 7.6.9.
  • Update github.com ionic-team to version 6.2.2.
  • Update github.com ionic-team to version 7.6.9.
  • Update com.capacitorjs:core to version 6.2.2.
  • Update com.capacitorjs:core to version 7.6.9.
  • Update capacitor android to version 8.5.1.
  • Update capacitor ios to version 8.5.1.
  • Update github.com ionic-team to version 8.5.1.
  • Update com.capacitorjs:core to version 8.5.1.
  • Update com.capacitorjs:core to version 8.4.3.
  • Update capacitor android to version 8.4.3.
  • Update capacitor ios to version 8.4.3.
  • Update github.com ionic-team to version 8.4.3.
Affected software
Ecosystem VendorProductAffected versions
– ionic-team capacitor >= 6.0.0, < 6.2.2
– @capacitor android >= 8.5.0, < 8.5.1
– @capacitor ios >= 8.5.0, < 8.5.1
– com.capacitorjs core >= 8.5.0, < 8.5.1
– swift github.com/ionic-team/capacitor-swift-pm >= 8.5.0, < 8.5.1
npm capacitor android >= 6.0.0, < 6.2.2
>= 7.0.0, < 7.6.9
>= 8.5.0, < 8.5.1
>= 8.3.5, < 8.4.3
>= 8.0.0, <= 8.3.4
Fix: upgrade to 6.2.2
npm capacitor ios >= 6.0.0, < 6.2.2
>= 7.0.0, < 7.6.9
>= 8.5.0, < 8.5.1
>= 8.3.5, < 8.4.3
>= 8.0.0, <= 8.3.4
Fix: upgrade to 6.2.2
swift github.com ionic-team >= 6.0.0, < 6.2.2
>= 7.0.0, < 7.6.9
>= 8.5.0, < 8.5.1
>= 8.3.5, < 8.4.3
>= 8.0.0, <= 8.3.4
Fix: upgrade to 6.2.2
maven – com.capacitorjs:core >= 6.0.0, < 6.2.2
>= 7.0.0, < 7.6.9
>= 8.5.0, < 8.5.1
>= 8.3.5, < 8.4.3
>= 8.0.0, <= 8.3.4
Fix: upgrade to 6.2.2
Original advisory text
Capacitor Android and iOS: remote content can be loaded at the app origin via the internal HTTP proxy path
Capacitor is a cross-platform native runtime for web applications. From 6.0.0 until 6.2.2, 7.6.9, 8.3.5, 8.4.3, and 8.5.1, the Android and iOS WebView navigation guard validates a target URL's host and scheme but not its path, allowing a victim who activates an untrusted link to navigate a frame to /_capacitor_http_interceptor_. The native proxy can fetch an attacker-selected URL and return the response as a document at the application's own origin, allowing script in that response to access same-origin storage, cookies, and registered Capacitor plugin capabilities. Applications remain affected when CapacitorHttp is disabled because affected releases serve the proxy path regardless of that setting. This issue is fixed in versions 6.2.2, 7.6.9, 8.3.5, 8.4.3, and 8.5.1.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
9.3 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-346Origin Validation Error
CWE-441Unintended Proxy or Intermediary ('Confused Deputy')
Timeline
Published1 Oct 2026
Updated9 Oct 2026
First seen1 Oct 2026
Sources
CVE-2026-103922 · NVD
CVE-2026-103922 · MITRE
CVE-2026-103922 · OSV
GHSA-rvm3-566m-v7fv · GHSA
Track software like this
Free during beta